struers LaboPress-3 Gebrauchsanweisung Seite 25

Error
The top closure cannot be
screwed down completely.
The top closure can not be
loosened.
LaboPress-3
Instruction Manual
Cause
Damage to the threaded connection
in the top closure or to the upper
ram.
Dirt in the threads on the top
closure and the mounting cylinder.
The disc for thermal insulation,
placed on the top of the upper ram,
has a larger diameter than the
upper ram.
The top closure has not been
turned ¼ turn back before starting
the process.
Cured resin on the cylindrical
surface of the top ram.
Dirt in the threads of the top
closure.
Action
Remove the upper ram from the top
closure (see instructions in chapter
Maintenance). Try both the following
procedures to identify the problem:
Try to mount the top closure, without
the upper ram. If this is not possible,
call a Struers service technician.
Try to insert the disconnected upper
ram into the mounting cylinder. If this is
not possible, call a Struers service
technician.
Clean the threads.
Use only a dry lubricant powder.
Call a Struers service technician.
To release the top closure:
- Move the lower ram up and down
several times.
If this does not help:
- Put heating on for 1 min. and try
again.
If this does not help:
- Complete a mounting process without
force, but with heating and cooling
time of about 15 min.
If this does not help:
- Remove the two handles on the top
closure.
- Remove the plastic cover from the top
closure (See Maintenance).
- Loosen the top closure with a fork
spanner.
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